Malibu Creek is a major waterway flowing through the Santa Monica Mountains in Southern California, running approximately 10 miles from Malibou Lake to Malibu Lagoon, where it enters the Pacific Ocean at Surfrider Beach. The watershed covers about 110 square miles and contains diverse habitats including coastal strand, oak and riparian woodlands, chaparral, coastal sage scrub, native grasslands, sulfur springs, and brackish water lagoon. Despite being located in one of the largest urban areas globally, over 75% of the watershed remains undeveloped, with several small cities and rural communities scattered throughout. Malibu Creek State Park, a popular recreation area, encompasses much of the creek corridor and provides opportunities for swimming, rock climbing, hiking, and fishing. However, the creek faces significant environmental challenges including water quality issues, habitat degradation, and impacts from human development.